Zero error occur in every reading means that the measuring instrument needs to recalibrated and adjusted.
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What is Zero error?</h3>
This error occurs when a measuring instrument reflects a digit which isn't zero despite the real value being zero.
When this occurs, only the zero screw on the device should be adjusted so as to correct this technical error. This is why recalibration should be the most appropriate solution.
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Answer:
depends on the girl
Explanation:
like how my opinion would be different from another girl. But for most girls it's if the guy is cute.
Each scientist could be working on the problem for different reason. Or, each scientist could be focused on different elements of the problem, concluding in different conclusions between the scientist.